content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * --------------------
   * XIntervalSeries.java
   * --------------------
   * (C) Copyright 2006-2012, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 20-Oct-2006 : Version 1 (DG);
   * 11-Apr-2008 : Added getXLowValue() and getXHighValue() methods (DG);
   *
   */
  
  package org.jfree.data.xy;
  
  import org.jfree.data.ComparableObjectItem;
  import org.jfree.data.ComparableObjectSeries;
  
  /**
   * A list of (x, x-low, x-high, y) data items.
   *
   * @since 1.0.3
   *
   * @see XIntervalSeriesCollection
   */
  public class XIntervalSeries extends ComparableObjectSeries {
  
      /**
       * Creates a new empty series.  By default, items added to the series will
       * be sorted into ascending order by x-value, and duplicate x-values will
       * be allowed (these defaults can be modified with another constructor.
       *
       * @param key  the series key (<code>null</code> not permitted).
       */
      public XIntervalSeries(Comparable key) {
          this(key, true, true);
      }
  
      /**
       * Constructs a new xy-series that contains no data.  You can specify
       * whether or not duplicate x-values are allowed for the series.
       *
       * @param key  the series key (<code>null</code> not permitted).
       * @param autoSort  a flag that controls whether or not the items in the
       *                  series are sorted.
       * @param allowDuplicateXValues  a flag that controls whether duplicate
       *                               x-values are allowed.
       */
      public XIntervalSeries(Comparable key, boolean autoSort,
              boolean allowDuplicateXValues) {
          super(key, autoSort, allowDuplicateXValues);
      }
  
      /**
       * Adds a data item to the series.
       *
       * @param x  the x-value.
       * @param y  the y-value.
       * @param xLow  the lower bound of the y-interval.
       * @param xHigh  the upper bound of the y-interval.
       */
      public void add(double x, double xLow, double xHigh, double y) {
          super.add(new XIntervalDataItem(x, xLow, xHigh, y), true);
      }
  
      /**
       * Returns the x-value for the specified item.
       *
       * @param index  the item index.
       *
       * @return The x-value (never <code>null</code>).
       */
      public Number getX(int index) {
          XIntervalDataItem item = (XIntervalDataItem) getDataItem(index);
          return item.getX();
      }
  
      /**
       * Returns the lower bound of the x-interval for the specified item.
       *
       * @param index  the item index.
       *
       * @return The lower bound of the x-interval.
       *
       * @since 1.0.10
       */
      public double getXLowValue(int index) {
          XIntervalDataItem item = (XIntervalDataItem) getDataItem(index);
          return item.getXLowValue();
      }
  
      /**
       * Returns the upper bound of the x-interval for the specified item.
       *
       * @param index  the item index.
       *
       * @return The upper bound of the x-interval.
       *
       * @since 1.0.10
       */
      public double getXHighValue(int index) {
          XIntervalDataItem item = (XIntervalDataItem) getDataItem(index);
          return item.getXHighValue();
      }
  
      /**
       * Returns the y-value for the specified item.
       *
       * @param index  the item index.
       *
       * @return The y-value.
       */
      public double getYValue(int index) {
          XIntervalDataItem item = (XIntervalDataItem) getDataItem(index);
          return item.getYValue();
      }
  
      /**
       * Returns the data item at the specified index.
       *
       * @param index  the item index.
       *
       * @return The data item.
       */
      @Override
      public ComparableObjectItem getDataItem(int index) {
          return super.getDataItem(index);
      }
  
  }
  